Question

Use the References to access important values if needed for this question Some Radioactive Isotopes Useful in Medical Imaging Mode of Decay Isotope Haife Use in Medical Imaging Carbon-11 Fluorine-18 Phosphorus-32 Chromium-51 Iron-59 Gallium-67 Selenium-75 20.3 m 109 m 14.3 d 27.7 d 44.5 d 78.3 h 118 d 13.3 s 22.2 m 6.01 h 8.04 d 64.1 h 3.05 d Brain scan to trace glucose metabolism Brain scan to trace glucose metabolism SF Cr SGa eye tumors e albinism, image the spleen and gastrointestinal tract 15 ?.?., Dia gnos Bone marrow function, diagnose anemias Whole-body scan for tumors Pancreas scan Lung ventilation scan Scan for bone diseases, including cancer Brain, liver, kidney, bone scans; diagnosis of damaged heart musc Diagnosis of thyroid malfunction Kidney scan Heart scan and exercise stress test ?.?., ?.?., 34* Kr Krypton-81nm Sr Strontium-81 Technetium-99m Iodine-131 Mercury-197 131 59 i97 ?.?., ?.?., TThalm-201

Answer 1

n/No = (1/2) ^t/pi/2 n = present amount No. Original amount t = time T_1/2 = half life for H_g-199, T_1/2 = 64. 1lim n/63. 5 = (1/2) ^128. 2/64. 1 N/63. 5 = (1/2) ^2 N/63. 5 = (1/2) 62 N/63. 5 = 1/4 N = 63. 5/4 = 15. 07mg Amount of H_g-199left = 15. 87mg F = 1omega Gamma emission Beta Name of produt Oxygen